--- product_id: 544409071 title: "#40 Roller Chain Sprocket B Type 3/4\" Bore Rust Prevention Hardened 10 Tooth" brand: "rhking" price: "£19.00" currency: GBP in_stock: true reviews_count: 8 category: "Rhking" url: https://www.desertcart.co.uk/products/544409071-40-roller-chain-sprocket-b-type-3-4-bore-rust store_origin: GB region: Great Britain --- # 3/4" bore with dual setscrews for secure fit 10 hardened teeth for precision power transfer Rust & corrosion resistant blackened finish #40 Roller Chain Sprocket B Type 3/4" Bore Rust Prevention Hardened 10 Tooth **Brand:** rhking **Price:** £19.00 **Availability:** ✅ In Stock ## Summary > ⚙️ Hardened, rust-proof, and locked tight — the sprocket your project deserves! ## Quick Answers - **What is this?** #40 Roller Chain Sprocket B Type 3/4" Bore Rust Prevention Hardened 10 Tooth by rhking - **How much does it cost?** £19.00 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.co.uk](https://www.desertcart.co.uk/products/544409071-40-roller-chain-sprocket-b-type-3-4-bore-rust) ## Best For - rhking enthusiasts ## Why This Product - Trusted rhking brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Precision Engineered Teeth:** Hardened to HRC38-42 for superior wear resistance and long-lasting performance. - • **Maintenance-Free Durability:** No lubrication needed, designed for stable, reliable operation in demanding industrial or DIY projects. - • **Secure Dual Setscrew Design:** Two 90° setscrews lock the sprocket firmly in place, eliminating slippage and downtime. - • **Rust-Resistant Blackened Finish:** Advanced surface treatment ensures corrosion protection and maintenance-free operation. - • **Optimized Fit for #40 Roller Chains:** Perfect 12.7mm pitch and 3/4" bore diameter for seamless integration with your drivetrain. ## Overview The RHKING #40 Roller Chain Sprocket features 10 hardened teeth made from AISI 1045 medium carbon steel with heat-treated surfaces for exceptional wear resistance. Its blackened finish provides rust and corrosion protection, while the 3/4" bore with dual setscrews ensures a secure, maintenance-free fit. Ideal for industrial and DIY applications requiring reliable, long-lasting drivetrain performance. ## Description RHKING #40 Roller Chain Sprocket B Type 3/4" Bore Rust Prevention Hardened 10 Tooth: desertcart.com: Industrial & Scientific Review: Exactly what we needed. - The sprocket worked great for the electric can crusher my husband is making. It was fast shipping and great packaging. Review: Good replacement sprocket - The sprocket that came with my motor kit unscrewed itself and fell off. This is a perfect replacement. It fit the shaft perfectly with the included woodruff key and attached to the shaft properly with the included hex nut. I would recommend using a thread lock compound on the motor shaft to keep the nut in place. This is a 9 tooth sprocket, and I used it to replace an 11 tooth sprocket. This necessitated resizing the chain, but it resulted in more low end power delivered to the rear wheel through the existing #415 chain. ## Features - ✅Size :Roller Chain Sprocket 12.7mm (1/2") Pitch,10 Teeth,3/4" Bore Diameter, 0.187" Keyway with 2 Setscrews at 90 degrees,B Type. - ✅Material:Sprocket is made of AISI 1045 Medium Carbon Steel, gear part of high temperature quenching heat treatment, high hardness, Harden Teeth at HRC38-42,wear resistance. - ✅Feature:Sprocket tooth surface hardening treatment, sprocket overall blackening treatment, rust, corrosion resistance. - ✅Use: Sprocket does not need lubrication, easy maintenance, can maintain good stable operation for a long time. - ✅Package Content :1 x Roller Chain Sprocket (included 2pcs set screw). ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0BV16KS32 | | Best Sellers Rank | #10,032 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #1 in Mechanical Roller Chain Sprockets | | Date First Available | February 6, 2023 | | Item Weight | 4.2 ounces | | Item model number | RHKING | | Manufacturer | RHKING | | Package Dimensions | 3.66 x 3.58 x 1.14 inches | ## Images ![#40 Roller Chain Sprocket B Type 3/4" Bore Rust Prevention Hardened 10 Tooth - Image 1](https://m.media-amazon.com/images/I/41YwFCoytkL.jpg) ## Available Options This product comes in different **Size, Style** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Exactly what we needed. *by L***K on November 12, 2025* The sprocket worked great for the electric can crusher my husband is making. It was fast shipping and great packaging. ### ⭐⭐⭐⭐⭐ Good replacement sprocket *by R***L on December 7, 2025* The sprocket that came with my motor kit unscrewed itself and fell off. This is a perfect replacement. It fit the shaft perfectly with the included woodruff key and attached to the shaft properly with the included hex nut. I would recommend using a thread lock compound on the motor shaft to keep the nut in place. This is a 9 tooth sprocket, and I used it to replace an 11 tooth sprocket. This necessitated resizing the chain, but it resulted in more low end power delivered to the rear wheel through the existing #415 chain. ### ⭐⭐⭐⭐⭐ Roller sprocket *by G***Y on December 26, 2025* Just what we needed ## Frequently Bought Together - RHKING #40 Roller Chain Sprocket B Type 3/4" Bore Rust Prevention Hardened 10 Tooth - Jeremywell #40 Roller Chain Idler Sprocket 1/2" Bore Hardened 17 Tooth --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.co.uk/products/544409071-40-roller-chain-sprocket-b-type-3-4-bore-rust](https://www.desertcart.co.uk/products/544409071-40-roller-chain-sprocket-b-type-3-4-bore-rust) --- *Product available on Desertcart Great Britain* *Store origin: GB* *Last updated: 2026-04-23*